Mysql ERROR 1396 (HY000) 錯誤的解決辦法

創建用戶的時候報告這個錯誤：

ERROR 1396 (HY000): Operation CREATE USER failed for 'abc'@'localhost'

緣由是mysql中已經有了這個用戶，從mysql.user中直接刪除delete，而後刷新權限FLUSH PRIVILEGES，再建用戶就不會有這個問題了。

若是是drop user 的話，mysql內部會自動刷新一下，那麼再建也不會有這問題了。

舉例說明1——delete刪除：

mysql> create user 'abc'@'localhost';

Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| abc | localhost |

| root | localhost |

+------+-----------+

3 rows in set (0.00 sec)

mysql> delete from user where user='abc';

Query OK, 1 row affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| root | localhost |

+------+-----------+

2 rows in set (0.00 sec)

再次建立同名用戶，報錯以下：

mysql> create user 'abc'@'localhost';

ERROR 1396 (HY000): Operation CREATE USER failed for 'abc'@'localhost'

這裏要刷新權限，刷新以後就能夠建立了；

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> create user 'abc'@'localhost';

Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| abc | localhost |

| root | localhost |

+------+-----------+

3 rows in set (0.00 sec)

舉例說明2——drop 刪除，能夠直接建立：

mysql> drop user 'abc'@'localhost';

Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| root | localhost |

+------+-----------+

2 rows in set (0.00 sec)

mysql> create user 'abc'@'loaclhost';

Query OK, 0 rows affected (0.00 sec)